Bike Sharing — 2nd Generation
Copenhagen has a very successful 2nd generation bicycle sharing program, where you can borrow a bike by putting a cash deposit in where the bike is locked and you get the deposit back when you return the bike. Although not as sophisticated as Paris or Barcelona‘s 3rd generation bicycle sharing programs, this is a good one as well.
Image Credit 1: norrebrograde via flickr under a Creative Commons license
Image Credit 2: supervillain via flickr under a Creative Commons license
Image Credit 3: quatro.sinko via flickr under a Creative Commons license